Biology

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Circulation
Move substances around the body
1 of 5
Diffusion
Move molecules from high to low concentration by random movement
2 of 5
Open Circulatory System
Insects; heart pumps blood into cavities surrounding organs. Heart relaxes> blood drawn back from cavity into heart through valve opening
3 of 5
Closed Circulatory System
Vertebrates; blood enclosed in tubes. Creates high blood pressure, blood forced through channels. Travels faster so more efficient
4 of 5
Blood Travel
Leaves heart under pressure> along ar
5 of 5

Other cards in this set

Card 2

Front

Move molecules from high to low concentration by random movement

Back

Diffusion

Card 3

Front

Insects; heart pumps blood into cavities surrounding organs. Heart relaxes> blood drawn back from cavity into heart through valve opening

Back

Preview of the back of card 3

Card 4

Front

Vertebrates; blood enclosed in tubes. Creates high blood pressure, blood forced through channels. Travels faster so more efficient

Back

Preview of the back of card 4

Card 5

Front

Leaves heart under pressure> along ar

Back

Preview of the back of card 5

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